The preparation of an indole appended vinamidinium salt, an indole appended vinylogous amide and an indole appended chloroenal are described. The subsequent regiospecific conversion of these indole containing building blocks to functionalized pyrazoles and pyrroles is detailed.
Keywords: Chloroenal; Indole; Pyrazole; Pyrrole; Vinamidinium salt; Vinylogous amide.